def unique
import bendvy-ecs-core@0.1.0.3/execution_save_world.bend as ExecutionSaveWorldimport Base
import bendvy-ecs-core@0.1.0.3/execution_save_recipe.bend as Recipe
36def unique(valid:Bool) -> Maybe<&2,Recipe.Refusal>:
37 match valid:
38 case True{}:None{}
39 case False{}:Some{Recipe.DescriptorMismatch{"unique layout keys","duplicate key"}}